func load(prefixLen int, verbose bool, cn string) *markovianomatic.Chain {
_, dbc := model.Connect(cn)
lc, _ := dbc.Count()
fmt.Fprintf(os.Stdout, "Using %s with %d prefixes\n", cn, lc)
var c *markovianomatic.Chain
c = markovianomatic.NewChain(prefixLen, verbose, cn)
loadChain(c, dbc)
return c
}
// Save method persist (save or update) the chain on the disk
func (c *Chain) Save() {
var cn = c.collection
if c.collection == "" {
cn = timeName()
c.collection = cn
}
sess, coll := model.Connect(cn)
defer sess.Close()
ks := c.Keys()
sort.Strings(ks)
var wg sync.WaitGroup
var workForce = 5
ch := make(chan model.NewNodeInfo, workForce)
for i := 0; i < workForce; i++ {
wg.Add(1)
go func() {
defer wg.Done()
var ni model.NewNodeInfo
var more bool
for {
ni, more = <-ch
if more {
model.NewNode(ni).Save(coll)
} else {
return
}
}
}()
}
count := len(ks)
bar := uiprogress.AddBar(count)
bar.AppendCompleted()
bar.PrependElapsed()
bar.PrependFunc(func(b *uiprogress.Bar) string {
return fmt.Sprintf("Node (%d/%d)", b.Current(), count)
})
uiprogress.Start()
for _, x := range ks {
ch <- model.NewNodeInfo{x, c.chain[x]}
bar.Incr()
}
uiprogress.Stop()
close(ch)
wg.Wait()
}